NVME drive not working in second slot of Asrock B450

If you see the board physically , you will see that slot B is too short for a typical NVMe SSD So even if you get

Sometimes asus motherboards have slotsports disabled by default Go into the bios and make sure whatever slots you want to use are configured

which lottery has best odds NVMe was designed for SSDs and communicates between the storage interface and the system's CPU using high-speed PCIe sockets without the limitations of form

which slot machine is most likely to win There are also three different types of “keys”, which purpose is to prevent the use of inappropriate M 1x 2280 NVMe slot and 1x 2230 NVMe slot, $999